Seat accessory



FIG. 1 is a front perspective view of the seat accessory showing a first embodiment of our new ornamental design in the environment of a sample vehicle seat;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a front perspective view of the seat accessory showing a second embodiment of our new ornamental design in isolation;

FIG. 8 is a front view thereof;

FIG. 9 is a rear view thereof;

FIG. 10 is a top view thereof;

FIG. 11 is a bottom view thereof;

FIG. 12 is a left side view thereof; and,

FIG. 13 is a right side view thereof.

The broken lines shown in the drawings are for the purpose of illustrating environmental subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a seat accessory, as shown and described. 